Family Name: TearjuLunatique
Region (NA/EU): NA
Currently in order to take advantage of this treasure item, the item must be transfered via maids to alternate characters. If the item was availble in the family inventory, horses could easily be checked in and checked out without needing to constantly transfer the item back and forth between characters. Thank you!
Every treasure item should be stored in family inventory. Imagine getting currently rarest treasure item - Ebenruth Nol and now needed to swap it between ships everytime you want to switch between barter and sea monster hunting.
Once per familiy items like our Krogdalo's Sanctuary should be able to be stored in the family inventory as it is unique and we can't get copies of it for tagged characters or other situations
Personally i don't see why it is an item at all. It should just automatically work on all characters in the family just like a fairy. to swap inside the stable - i.e. you have more than 1 of the same kind of mythical horse and just have to swap it for some reason. you could do it at the normal stable keeper using the transfer mount function just like sending to another stable in the world. Most folks would probably only have 1 of each which would then be inside the KS. as you can only use 1 character at a time the horse goes back into the KS when you log out.